Wood, plywood, and cloth are used primarily for light airplanes and gliders. The wings of subsonic aircraft are made of Duralumin, high-tensile steel, composition materials, reinforced plastics, and alloys of titanium, magnesium, and beryllium. In flight and during landing, a wing operates like a hollow beam, which is able to absorb air and inertial loads in any direction. The arrow indicates the direction of flight.Ĭables for the movable aerodynamic surfaces, heating and cooling apparatus, and various equipment, as well as engines and armament, are usually placed inside the wing. Types of wing profiles: (1) concave-convex, (2) plane-convex, (3) biconvex unsymmetrical, (4) biconvex symmetrical, (5) reflexed, (6) lenticular, (7) double-wedge, (8) wedge.
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